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CVE-2019-11935

Date: December 4, 2019

Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.

Language: C++

Severity Score

Related Resources (6)

https://github.com/facebook/hhvm/commit/1c518555dba6ceb45d5ba61845b96e261219c3b7
https://www.facebook.com/security/advisories/cve-2019-11935
https://hhvm.com/blog/2019/10/28/security-update.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-11935
https://nvd.nist.gov/vuln/detail/CVE-2019-11935
https://www.mend.io/vulnerability-database/CVE-2019-11935

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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